Rust

The Intel Core Ultra 9 275HX paired with the NVIDIA GeForce RTX 5080 Mobile delivers a performance profile in Rust that is heavily dictated by resolution and preset, with the data showing a clear transition from CPU-bound behavior at 1080p to GPU-bound behavior at 4K. This combination ranks 914th out of 3,723 tested combos in the game, placing it in the upper quartile of all systems. The measured frame rates reveal that while the hardware is exceptionally capable, the demands of Rust at higher resolutions and presets can still push the RTX 5080 Mobile to its limits, particularly when aiming for Ultra settings.

Resolution Scaling

The frame rate progression from 1920x1080 to 3840x2160 shows a substantial performance cost, but the shape of that curve changes depending on the quality preset. At Low settings, the average FPS drops from 222 at 1080p to 153 at 1440p, and further to 90 at 4K. This represents a 59% reduction in average frame rate when moving from 1080p to 4K on Low settings. The drop from 1080p to 1440p is 31%, while the drop from 1440p to 4K is another 41%, indicating that the scaling is not linear and the GPU becomes increasingly stressed as pixel count rises.

With High settings, the scaling pattern shifts. The averages are 126 FPS at 1080p, 86 FPS at 1440p, and 51 FPS at 4K. The percentage drops are 32% from 1080p to 1440p, and 41% from 1440p to 4K, mirroring the relative reductions seen at Low settings. However, the absolute frame rates are much lower, suggesting that the increased shading and texture work at High settings consumes a significant portion of the GPU's throughput regardless of resolution. At Ultra settings, the frame rates fall to 95 FPS at 1080p, 66 FPS at 1440p, and 39 FPS at 4K, with the 4K result being the only sub-40 FPS average in the entire dataset.

The data points to the RTX 5080 Mobile being the primary limiting factor at 4K, especially at Medium and above. The difference between Low and High at 4K is 39 FPS (90 vs 51), which is a 43% performance gap. In contrast, at 1080p, the gap between Low and High is 96 FPS (222 vs 126), a 43% difference as well, but the sheer headroom at 1080p suggests the CPU is capable of feeding the GPU enough frames to keep it busy. The 1080p Low result of 222 FPS is likely near the upper bound of what this CPU-GPU combination can achieve in Rust, indicating that the Ultra 9 275HX, with its 24 cores and 5.40 GHz boost clock, is not the bottleneck at lower resolutions.

FAQ

Q: What is the highest average frame rate this combo achieves in Rust?

A: The highest recorded average is 222 FPS at 1920x1080 with Low settings. The next highest is 153 FPS at 2560x1440 with Low settings, showing that the Low preset provides the most headroom for frame rate at all tested resolutions.

Q: How does the combo perform at 4K with Ultra settings?

A: At 3840x2160 with Ultra settings, the average FPS drops to 39. This is the lowest performance point in the measured data, indicating that the RTX 5080 Mobile is heavily taxed by the combination of high resolution and maximum quality presets in Rust.

Q: Is the CPU or GPU more likely to be the bottleneck at 1080p?

A: The data suggests the GPU is still the limiting factor at 1080p, but with less pressure. The 222 FPS average at Low settings is very high, and the drop to 126 FPS at High settings shows that graphical load still affects performance significantly. Given the CPU's 24 cores and high boost clock, it is likely providing ample frame generation capability.

Q: What is the performance difference between Medium and Ultra at 1440p?

A: At 2560x1440, the Medium preset yields an average of 102 FPS with a minimum of 87 FPS and a maximum of 118 FPS. The Ultra preset drops the average to 66 FPS. This represents a 36 FPS reduction, or a 35% performance loss, when moving from Medium to Ultra.

Q: Does the combo maintain playable frame rates at 4K on any preset?

A: Yes, the Low preset at 4K produces a 90 FPS average, which is well within playable territory. The Medium preset also achieves a 60 FPS average with a minimum of 51 FPS, which is still playable, while High drops to 51 FPS average and Ultra to 39 FPS.

Q: How does the minimum FPS compare to the average at 1080p Medium?

A: At 1920x1080 with Medium settings, the average FPS is 149, with a minimum of 126 FPS and a maximum of 171 FPS. The minimum is 15% lower than the average, indicating some frame time variance but no severe stuttering.

GPU Role

The NVIDIA GeForce RTX 5080 Mobile is the defining component for visual fidelity in Rust, and its specifications directly explain the observed scaling. The GPU features 16 GB of GDDR7 memory on a 256-bit bus, yielding a bandwidth of 896.0 GB/s. This substantial memory bandwidth is crucial for Rust's large, persistent world and texture streaming, especially at 4K where the pixel workload demands constant data transfer. The 16 GB capacity provides ample room for high-resolution textures without exceeding VRAM limits, which is likely why the card can still deliver 51 FPS at 4K High.

Clock speeds play a significant role in the frame rate differences between presets. The GPU's base clock is 975 MHz, with a boost clock of 1500 MHz. The boost behavior is what allows the card to reach higher performance under load, but as resolution and preset increase, the sustained clock may be limited by thermal and power constraints within the 80 W TDP envelope. The 7680 shading units and 240 TMUs provide the raw compute throughput, but the data shows that at 4K Ultra, the card simply cannot maintain the necessary fill rate, resulting in a 39 FPS average. The 96 ROPs handle the final pixel output, and at 3840x2160, the pixel rate of 144.0 GPixel/s is a limiting factor when combined with heavy shading.

The GPU's benchmark scores corroborate its mid-to-high tier positioning. Its 3DMark Steel Nomad DX12 score is 4952, and its Passmark G3D score is 27711, placing it in the 81st percentile of all GPUs. However, the nearest rival data shows it is closely matched with the RTX 4080 Mobile, which has an average score of 38135 compared to the RTX 5080 Mobile's 38349, a 0.6% delta. This indicates that while the 5080 Mobile is the newer architecture, it is not a generational leap in raw performance for this workload. The 23.04 TFLOPS FP32 compute rating is substantial, but Rust's optimization for draw calls and object rendering often relies more on memory bandwidth and ROP throughput than pure compute, which explains the performance cliff at 4K Ultra.

Measured FPS Breakdown

At 1920x1080, the combo shows a wide performance envelope. Low settings yield an average of 222 FPS, which is the highest recorded in the dataset. Medium settings average 149 FPS, with a minimum of 126 FPS and a maximum of 171 FPS, showing good consistency. High settings lower the average to 126 FPS, and Ultra settings drop it further to 95 FPS. The spread from Low to Ultra at 1080p is 127 FPS, demonstrating that the GPU's workload scales dramatically with preset quality even at a moderate resolution.

Moving to 2560x1440, the frame rates compress. Low settings average 153 FPS, a 31% reduction from the 1080p Low result. Medium settings average 102 FPS, with a minimum of 87 FPS and a maximum of 118 FPS. High settings average 86 FPS, and Ultra settings average 66 FPS. The spread from Low to Ultra at 1440p is 87 FPS, indicating that the resolution increase has a more pronounced effect on the higher presets. The 1440p Ultra result of 66 FPS is still smooth, but the 1440p Medium minimum of 87 FPS shows that the card can maintain high frame rates even with some graphical load.

At 3840x2160, the performance drops significantly. Low settings average 90 FPS, which is still playable but a 59% reduction from the 1080p Low result. Medium settings average 60 FPS, with a minimum of 51 FPS and a maximum of 70 FPS, providing a borderline 60 FPS experience. High settings average 51 FPS, and Ultra settings average 39 FPS. The 4K Ultra result is the only sub-40 FPS average, and the 4K High result of 51 FPS is marginal for fast-paced gameplay. The data shows that 4K is only truly comfortable with Low or Medium presets, as the gap between Medium and High at 4K is 9 FPS, while the gap between High and Ultra is 12 FPS, indicating diminishing returns and increasing GPU strain.

How This Combo Ranks

The combo ranks 914th out of 3,723 tested configurations in Rust, placing it in the top 24.5% of all systems. This rank reflects the strong performance of the Intel Core Ultra 9 275HX and the RTX 5080 Mobile, but it also shows that there are many faster setups, likely with desktop-class GPUs or higher-TGP mobile variants. The CPU's percentile ranking against all CPUs is 94, meaning it outperforms 94% of processors, and its average benchmark score is 67469. Its nearest rivals in CPU performance are the Intel Xeon w5-3525 (67673 avg score, -0.3% delta) and the AMD EPYC 4484PX (67822 avg score, -0.5% delta), showing that the Ultra 9 275HX is competitive with high-end workstation chips.

The GPU's percentile ranking is 81, with an average benchmark score of 38349. Its closest rival is the RTX 4080 Mobile, which has an average score of 38135, a 0.6% delta, indicating they are essentially equivalent in synthetic benchmarks. The fact that the combo ranks 914th, rather than higher, suggests that the GPU's 81st percentile performance is the limiting factor for the overall game rank, as the CPU's 94th percentile ranking would otherwise push the system higher. The data implies that for Rust specifically, the RTX 5080 Mobile's performance at 4K Ultra is what drags the combo down relative to other high-end systems, as the CPU is clearly capable of feeding more frames if the GPU could render them.

Settings Recommendations

For players prioritizing high frame rates, the Low preset at 1080p is the clear winner, delivering a 222 FPS average that maximizes the display's refresh rate potential. However, for a balanced experience, the Medium preset at 1440p is the sweet spot, offering a 102 FPS average with a minimum of 87 FPS. This provides smooth gameplay while maintaining visual quality that is noticeably better than Low, and the minimum FPS is high enough to avoid most stutters. At 4K, the Medium preset is the only viable option for a consistent 60 FPS experience, averaging 60 FPS with a minimum of 51 FPS.

The High preset is not recommended for any resolution where frame rate is critical. At 1080p, it drops the average to 126 FPS, which is still good, but the 23 FPS reduction from Medium is significant. At 1440p, High averages 86 FPS, which is acceptable but not ideal for competitive play. At 4K, High averages 51 FPS, which is below the 60 FPS threshold for smoothness. The Ultra preset is only suitable for 1080p, where it averages 95 FPS, but the visual gains over High are minimal in Rust's environment, and the 31 FPS loss from High to Ultra is not justified.

The data suggests that the Medium preset offers the best performance-per-visual-quality trade-off across all resolutions. It provides the highest minimum FPS values (87 at 1440p, 51 at 4K) relative to its average, indicating more stable frame pacing. For users with high-refresh 1080p displays, Low settings unlock the full potential of the hardware, while for 1440p and 4K users, Medium is the recommended starting point, with adjustments possible based on personal sensitivity to frame rate versus visual detail.

CPU Role

The Intel Core Ultra 9 275HX is a 24-core, 24-thread processor based on the Arrow Lake-HX architecture, with a base clock of 2.70 GHz and a boost clock of 5.40 GHz. This high core count and boost capability provide substantial headroom for Rust's simulation and entity processing, which is often single-threaded but benefits from high clock speeds. The CPU's Cinebench R23 multi-core score is 35589, and its single-core score is 2204, indicating strong performance in both parallel and sequential workloads. Its Passmark single-thread score is 4713, which is crucial for Rust's main thread.

The CPU's role in the measured FPS is evident in the 1080p Low result of 222 FPS. This high frame rate is only achievable if the CPU can process the game logic and issue draw calls faster than the GPU can render them. The Ultra 9 275HX's 5.40 GHz boost clock and 24 threads ensure that it is not a bottleneck at lower resolutions. However, the data shows that as resolution increases, the GPU becomes the limiting factor, as evidenced by the 4K Low result of 90 FPS, which is a 59% drop from 1080p Low. This indicates that the CPU is capable of generating frames at a much higher rate, but the GPU cannot keep up at higher pixel counts.

The CPU's memory bandwidth of 102.4 GB/s via dual-channel DDR5 is modest compared to the GPU's 896.0 GB/s, but it is sufficient for feeding the GPU with draw data. The 36 MB of shared L3 cache helps with game world data locality, reducing latency for frequently accessed objects. The CPU's benchmark scores place it in the 94th percentile of all CPUs, with an average score of 67469, and its nearest rival is the Intel Xeon w5-3525, which scores 67673, a 0.3% delta. This suggests that the Ultra 9 275HX is not a weak link in the system; rather, it provides ample compute power that is underutilized at 4K due to GPU constraints, but fully utilized at 1080p where high frame rates are achievable.